CAJ | 학술논문

采用部分扩散预合金化和温压工艺制备含锰铁基合金，研究合金元素及其含量对铁基烧结材料组织和性能的影响。结果表明，不同Mn含量的Fe-2Cu-xMn-0.6C(x=0.5，1.0，1.5，2.0，2.5)合金，随Mn含量增加，由于氧化加剧造成材料的孔隙率升高，进而导致抗拉强度下降；当Mn含量为0.5%(质量分数)时其抗拉强度达到最大值718 MPa，表观硬度则在Mn含量为2.5%时获得最大值94 HRB；压坯的弹性后效随Mn含量提高先增加后降低，烧结后材料有稍微膨胀；含锰量为1.0%的材料具有良好的综合力学性能，抗拉强度和硬度分别达到612 MPa和76 HRB，弹性后效和烧结膨胀分别为0.16%和0.32%；材料的显微组织以铁素体和珠光体为主。
채용부분확산예합금화화온압공예제비함맹철기합금，연구합금원소급기함량대철기소결재료조직화성능적영향。결과표명，불동Mn함량적Fe-2Cu-xMn-0.6C(x=0.5，1.0，1.5，2.0，2.5)합금，수Mn함량증가，유우양화가극조성재료적공극솔승고，진이도치항랍강도하강；당Mn함량위0.5%(질량분수)시기항랍강도체도최대치718 MPa，표관경도칙재Mn함량위2.5%시획득최대치94 HRB；압배적탄성후효수Mn함량제고선증가후강저，소결후재료유초미팽창；함맹량위1.0%적재료구유량호적종합역학성능，항랍강도화경도분별체도612 MPa화76 HRB，탄성후효화소결팽창분별위0.16%화0.32%；재료적현미조직이철소체화주광체위주。
The partially-diffuse alloying and warm compaction techniques were used to fabricate the iron-base alloys containing manganese. Effect of Mn content on the microstructure and properties of iron-base sintered materials was investigated. The results show that for the Fe-2Cu-xMn-0.6C (x=0.5, 1.0, 1.5, 2.0, 2.5) alloy, tensile strength decreases with increasing Mn content due to the porosity increase that caused by oxidation. When the mass fraction of Mn is 0.5%, the tensile strength reaches a maximum value of 718 MPa;When the Mn content is 2.5%, hardness reaches a maximum value of 94 HRB. The elongation of the green compact firstly increases and then decreases, and the dimensional change is not significant. The material with 1.0%Mn has a better mechanical property with tensile strength of 612 MPa, hardness of 76 HRB. Springing back effect and the expansion are 0.16%and 0.32%, respectively. The microstructure composes of mainly pearlite and ferrite.